Heterosexuality

Heterosexual people love people (sexually and romantically) of the opposite gender. A heterosexual man loves women. A heterosexual woman loves men. Another less formal word for heterosexual is straight.

Most people are heterosexual. People who are not heterosexual are homosexual, bisexual or asexual. Society is mostly 'heteronormative', which means that most people see homosexuality as not 'normal'.